RuledSheet

A1 paper size

A1 is 594 × 841 mm (23.39 × 33.11 in), half of A0 and the size of eight A4 sheets. It is used for large posters, plans and presentation boards.

A1
Millimetres594 × 841 mm
Centimetres59.4 × 84.1 cm
Inches23.39 × 33.11 in
PDF points (1/72 in)1683.78 × 2383.94 pt
Pixels at 72 dpi1684 × 2384 px
Pixels at 150 dpi3508 × 4967 px
Pixels at 300 dpi7016 × 9933 px
A0A1A2Tabloid
Drawn to the same scale.
A1 next to its neighbours
SizemminchesDifference from A1
A0841 × 118933.11 × 46.81Twice the area
A1594 × 84123.39 × 33.11—
A2420 × 59416.54 × 23.39Half the area
Tabloid / Ledger (11 × 17)279.4 × 431.811 × 17-314.6 mm wide, -409.2 mm tall

What A1 is used for

  • Large posters and exhibition graphics
  • Architectural drawings and site plans
  • Presentation boards and flip charts

Scaling

An A1 drawing printed at 1 : 2 fits A3; at 1 : 4 it fits A5. Each A size down halves the area and divides the sides by √2.

Questions

How big is A1 in pixels?

7016 × 9933 px at 300 dpi and 3508 × 4967 px at 150 dpi.

How many A4 pages fit on A1?

Eight.